4

Mg     -0.039023262478899     -0.217806927196530      0.218138927456429
Mg      1.642160691478363      2.069102356536350     -0.169035028034650
Mg      1.483157264981914     -0.066994074176567      1.595024819735864
Mg     -0.202004284880426      1.791615582216835      1.840121920042799